Question about 2004 Suzuki VS 1400 Intruder

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My suzuki intruder is missing backfiring on the

My suzuki intruder 2004, 1400 is missing backfiring on the front cylinder. I have cleaned carbs, put new gas, new spark plugs and still pops and backfires. Help! Thanks.

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Did you sync the two carbs? If not the rear may be getting all the gas from the rear carb and none to the front. Twist throttle engine off and see if front carb cable is pulling the carb open.
Also unscrew the spark plug boot from the front spark plug wire and trim 1/8th inch off the wire and screw the boot back in. The plug wire end may be corroded on that wire.

Posted on Feb 08, 2010

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Remember to look for vacume leaks. I seem to recall this model uses carbs? If so check the CV slide components also. All trouble shooting mistakes come from ignoring the simple and throwing parts at a engine. Many problems are also caused by using aftermarket exhaust or air intake parts. Suzuki engineers are much more qualified to make a bike run its best vs the typical dealership or other mechanic. Unless a dyno is available with a exhaust test unit it is not a great idea to make performance mods to these complex systems.

Posted on Oct 01, 2014

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Related Questions:

1 Answer

After changing the spark plugs, and riding the bike for about10 minutes, I heard a back fire , and the bike started smoking, and gasoline leaking throught the tail pipes.


When you drove it for 10 minutes did it work & run perfect without any missing? One cylinder possibly started missing backfired and then maybe the carb flooded some how. I would pull both plugs first. Have a look at the plugs, then you will be able to tell which one was missing (wet with fuel). Check compression on each cylinder and then check the carb. I hope this helps.

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1 Answer

My 2000 Suzuki intruder vs800 when giving gas tries to bogs down and skip even when idling has a little pop and only tries to run on the front cylinder like the rear cylinder is miss-firing, already...


Make sure the battery is fully charged and check your charging system to make sure you are putting out 14 volts or so. If yes then check the spark plug wires for defects, then check the spark plug itself if black or wet looking then it may be from a fouled plug or weak spark. If you can switch the coils to see if that has the opposite effect.

Apr 16, 2014 | Suzuki Motorcycles

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Suzuki intruder 1500 LC I have problem with carburator need to rebuild is a kit available? motorcycle.runs terrible backfires sputters poor gas mileage 135km to atank of gas


Intruder carbs are notorious for this issue. What you have going on is that the needle seat has become worn out. The problem is, that this carb was designed with pressed in needle seats that cannot be removed. You will need to search online for an intruder carb rebuilder that can press in the seats for you, as well as change the seals, replace the needle, check the diapragm and jets, and replace/clean the floats. OR, you can try to find new carbs online from a wrecked or used Intruder 1500 VL.

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2 Answers

My 1400 intruder pops and back fires


I think maddogcycle is right. One cylinder is running rich and the other running lean. It seems as though they have not been balanced properly and the mixture not accurately adjusted. The settings on these carburettors are critical and must be adjusted with the proper gauges. I'd advise you to have the carbs cleaned and adjusted and tuned to the engine for balance of inducted air flow and fuel/air ratio (mixture)

Apr 09, 2010 | 1996 Suzuki VS 1400 Intruder

1 Answer

Have a 2000 Suzuki Intruder 800. Back cylinder


When cleaning a multi carb bike, it is best to take them all off. Clean and reset float levels on both. Then reinstall, set both idle mixture screws about 1 turn out. Then adjust, and you'll probably have to syncronise them also.

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1 Answer

Backfiring and low compression in back cylinder


sounds if you have a burnt valve/s somewhere

May 13, 2009 | 1996 Suzuki VS 1400 Intruder

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